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Finding the Fourth Proportional to 39,281.80, 58,922.70 and 9,699.40

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Solution

The fourth proportional to 39,281.80, 58,922.70 and 9,699.40 is: 14,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281.80 : 58,922.70 = 9,699.40 : x
  2. Step 2: Convert to fraction form
    39,281.80/58,922.70 = 9,699.40/x
  3. Step 3: Cross multiply
    39,281.80x = 58,922.70 × 9,699.40
  4. Step 4: Simplify right side
    39,281.80x = 571,514,836.38
  5. Step 5: Solve for x
    x = 571,514,836.38/39,281.80
  6. Step 6: Final answer
    x = 14,549.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.